Abstract:
The method uses a miniature HF transmitter (2) in the form of a chip card incorporated in the monitored object (1), for providing a data telegram identifying the object at programmed time intervals, received by a reception station (5) for a GSM communications network and/or geostationary satellites, for determining each position of the object. The object position can be transmitted to a central computer upon verification of an interrogation code, with a tariff charge calculated for each interrogation. An Independent claim for a transport and position monitoring system is also included.
Abstract:
The invention relates to a microelectronic structure, which provides improved protection of a hydrogen-sensitive dielectric against hydrogen contamination. According to the invention, the hydrogen-sensitive dielectric (14) is covered at least by an intermediate oxide (18), whose material thickness is at least five times the thickness of the hydrogen-sensitive dielectric. The intermediate oxide (18) simultaneously acts as an intermetal dielectric and is metallized on its surface for this purpose. The intermediate oxide (18), which has a sufficient thickness, absorbs the hydrogen that may be released during the deposition of a hydrogen barrier layer (22, 26), thus protecting the hydrogen-sensitive dielectric (14).
Abstract:
The invention relates to a method and a system for monitoring the transportation and positioning of moving objects, a miniaturised high frequency transmitter being attached first of all to the object and the high frequency transmitter after clearance sending a data telegram in pre-set programmable intervals of time, the data telegram clearly identifying the object. The data telegrams are received by reception stations of a preferably GSM telecommunication network and/or from geostationary location satellites. The received data are stored and serve to locate the respective transmission place via radio cells of the GSM network and/or of the satellite location system. The stored data about the position or the transport route of the respective object are then transmitted upon inquiry and after identification by pre-setting and checking of a code word. The data storage for a multiplicity of objects is achieved by means of a central computer which is used at the same time for calculating and billing of costs per inquiry.
Abstract:
The invention relates to a method for the production of an integrated circuit, comprising the following steps: a substrate (1) is provided with at least one first, second and third gate stack (GS1, GS2, GS3) of approximately the same height on the surface of said substrate, a common active area (60) being provided on the surface of the substrate in said substrate (1) between the first and second gate stack (GS1, GS2); a first insulating layer (70) is provided in order to cover the embedding of the first, second and third gate stack (GS1, GS2, GS3); the upper side of a gate connection (20) of the third gate stack (GS3) is uncovered; a second insulating layer (80) is provided in order to cover the upper side of a gate connection (20); a mask (M2) is provided on the resulting structure having a first opening (F2a) above the uncovered upper side of the gate connection (20) of the third gate stack (GS3), a second opening (F2b) above the substrate (1) between the third and second gate stack (GS3, GS2) and a third opening (F2c) above the common active area (60), partially overlapping the first and second gate stack (GS1, GS2), and simultaneously forming a first, second and third contact hole (KB, KS, KG) using said mask (32) in an etching process, the first contact hole (KB) uncovering the common active area (60) on the surface of the substrate between the first and second gate stack (GS1, GS2), the second contact hole (KS) uncovering the surface of the substrate between the second and third gate stack (GS2, GS2) and the third contact hole (KG) uncovering the upper side of the gate connection (20) of the third gate stack (GS3).
Abstract:
The invention relates to a method for the production of ferroelectric capacitors structured according to the stack principle, which are used in integrated semiconductor memory chips, wherein the individual capacitor modules (10, 11) have an oxygen barrier (4a, 4b) between a lower capacitor electrode (5a, 5b) and an electrically conductive plug (1a, 1b). At a site where it is not covered by the corresponding oxygen barrier (4a, 4b), an unstructured adhesive layer (3) is oxidized by the oxygen arising during the tempering process of the ferroelectric (6a, 6b) and forms insulating segments at said site in such a way that the lower capacitor electrodes (5a, 5b) of the ferroelectric capacitors (10, 11) are electrically insulated from one another. This makes it possible to eliminate the structuring step of the adhesive layer (3). Furthermore, said layer (3) serves as a getter of oxygen and inhibits the diffusion of oxygen to the plug.
Abstract:
The invention relates to the production of one (or several) contacts on one or several active areas of a semiconductor disk, whereby one or several insulated control lines can be arranged on the active areas to be contacted. The control lines can, for example, be gate lines. The semiconductor element is produced in the following manner: a polysilicon layer is deposited on the semiconductor disk, the polysilicon layer is structured in order to produce a polysilicon contact over the active area, whereby the polysilicon contact covers the two control lines in an at least partial manner, a first insulator layer is applied to the semiconductor disk incorporating said polysilicon contact, the first insulator layer is partially removed to reveal the covering surface of the polysilicon contact and a metal layer is applied to the semiconductor disk for the electrical contacting of the polysilicon contact.
Abstract:
The invention relates to a method for producing ferroelectric memory cells in accordance with the stack principle. According to said method, an adhesive layer (2, 3) is formed between a lower capacitor electrode (6) of a memory capacitor and a conductive plug (1), which is formed below said electrode and makes an electric connection between said capacitor electrode (6) and a transistor electrode of a selection transistor that is formed in or on a semiconductor wafer. An oxygen diffusion barrier (4, 5) is formed above the adhesive layer and once the ferroelectric has been deposited, the adhesive layer and the barrier are subjected to rapid thermal processing (RTP) in an oxygen atmosphere. The method is characterised by the following steps: (A) Determination of the oxygen speed of the adhesive layer (2, 3) and the diffusion coefficient (DOxygen(T)) of oxygen in the material of the adhesive layer (2, 3), dependent on the temperature (T); (B) Determination of the diffusion coefficient (DSilicon(T)) of silicon in the material of the adhesive layer (2, 3), dependent on the temperature and (C) Calculation of an optimal temperature range for the RTP step from the two diffusion coefficients, (DOxygen(T)) and (DSilicon(T)) that have been determined for a predetermined layer thickness (dBARR) and layer width (bBARR) of the layer system consisting of the adhesive layer and the oxygen diffusion barrier, so that during the RTP step the siliconisation of the adhesive layer occurs more rapidly than its oxidation.
Abstract:
The invention relates to a method for producing a ferroelectric capacitor, especially in large-scale integrated, non-volatile semiconductor memories, and to an integrated ferroelectric semiconductor memory arrangement. In order to prevent damage to the ferro- or paraelectric (6), a TaSixNy barrier layer (7) is deposited over the capacitor module (1). The TaSixNy material has barrier properties in relation to hydrogen diffusion and Ti diffusion.